Oil-press.



No. 836,701. PATENTED NOV. 27, 1906 P. OLIVER.

' OIL PRESS.

APPLICATION FILED JAN.12, 1906,

2 SHEETSSHEET 1,

W1 yywissyis; [NVENTORD A NORA '15 Y5 PATENTED NOV. 2'7, 1906. F. OLIVER.

OIL PRESS.

APPLICATION FILED JAN. 12, 1906.

2 SHEETSSHEET 2.

7 Unitas sr rns PATENT oiu rcn.

FREDERICK oL vER, or PORTSMOUTH? VIRGINIA.

OlL-PRESS.

NQQ 836,701

Specification of Letters Patent.

Patented Nov. 27, 1906.

i Application filed January 12, 1906. Serial No. 295,798.

To all whom, it may concern.-

Be it known that I, FREDERICK OLIVER, a

citizen of the United States, residing at Portsmouth, in the county of Norfolk and State of Virginia, have invented a new and useful Oil-Press, of which the following is a Astill further object of the invention is to provide a screw in which the flight or flights may be mutilated or broken with a view of allowing portions of the material to pass to a position where they will be again engaged and compressed and, further, .to so arrange said mutilated portions that the'peripheries or outer edges thereof will serve as cams and tend to force the mass outward in the direction' of the casing.

A still further object of the invention is to provide means for holding the mass from rotative movement with the screw, so that it will not travel around with the latter, but will be compelled to move in a practically straight line from the entrance to the discharge end of the casing.

A still further object of the invention is to provide a casingin which the slats or similar members are so arranged as to form retarding-ribs that will prevent rotative movement of the material.

' sage of any solid material.

pressure-head at the discharge end of the casing, the plug having a curved surface over which the material is guided and said plug being adjustable in order to alter the area of the annular discharge-opening at the end of the casing.

- With these and other objects in view, as

will more fully hereinafter appear, the invention consists in certain novel features of construction and. arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size, and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure. 1. IS

'a sectional elevation of a press constructed in accordance with the invention. Fig. 2 is a transverse sectional view of the same on the line 2 2 of Fig. l, the view being on a sli htlyenlarged scale. Fig. 3 is a view similar to Fig. 2, illustrating a slightly-modified construction of easing. Fig. 4 is a similar vlea illustrating a still further modification of the casing. Fig. 5 is a detail sectional vlew of a modified form of out flight-screw. Figs. 6 and 7 illustrate modified constructions of the adjustable plug or compressiomhead.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

The press includes a casing 10, into which the seed or other material is fed at 11 and is discharged at the exit 12, the oil or other liquid expressed from such material being discharged through erforations or through the spaces between t e slats of which the casing of the press is formed.

The casing in the present instance is formed of slats 15, that are slightly separated from each other in order to form passages for the oil, and between said slats are filtering mediums .16, that serve to prevent the pas- In the nianufacture of casings of this general type it is usual to place the strips parallel with the axis of the casing and the compression- 40 i away portions 21 occurring at intervals and screw; but this permits the free rotation of the material with the screw, the press often failing in its work for this reason. In the present instance the slats are disposed on slightly helical lines, so that being twisted to a slight extent one edge of each slat will pro trude partly within the casing to an extent greater than the other edge and will thus form a rib or obstruction which by engagement with the material will tend to pre rent rotative movement thereof;

The slats 15 instead of being arranged on helical lines maybeof the structure shown at 15 in Fig. 3, wherein the inner face of each slat is arranged at an obtuse angle tothe outer face thereof, so that one edge ofthe slat will act as a rib to prevent rotative movement of the'mass. Theslats in this case may extend parallel with the axis of the screw.

The casing insome instances may be formed of metal-such, for instance, as the casing 15 in Fig. 4. In this case the casing is provided with numerous perforations 17 mass of material from end to end of the easing and at the same time exert great pressure thereon. This double-flight screw is preferably cut ormutilate'd at intervals, the cutpreferably being disposed in the manner shown in Fig. 1, wherein one flight is cut away, while the other flight is continuous, so that to the rear of each cut-away portion a forcing effect will be produced in order to urge the mass of material through such cutaway portion.

21 are preferably so arranged that that wall in the direction of the plane of rotation of the screw will be disposed on a curved or inclined line, as shown more clearly in Fig. 3, so that it will act as a cam and tend to force the material passing through the recess outward into engagement with the wall of the casing. In all cases,-however,' it is preferred that the'recessed portion 21 stop short of the carrying-shaft 22 of the screw, as shown, for instance, in Figs. 3 and 5, so that the central portion of the mass of material will beheld under continuous pressure and will be constantly moved forward, while the portion of The cut or recessed portionsthe outer mass represented by the depth of the recess will move independently of the inner mass, and thus permit agitation and the contact of the blades proper with successively fresh portions of the mass, so thatalargerpercentage of oil may be expressed.

In constructingthe screw it, is preferred that the forward or active face of each flight be arranged on a curved or inclined line from the root to the crown of the flight, so that there will be a tendency to force the mass out ward into engagement with the casing, as

well as to feed the mass forward toward the discharge-opening.

At the discharge end of the press is a plug or compression-head 30, that is preferably carried by or forms a bearin for the shaft 22. This plug is provided'wit a curved surface for engagement with the mass ofniaterial, and the plug may be of theovateform shown in Fig. 1 or may be spherical, as shown I in Fig. 7, or its surfacemay be concaved, as

shown in Fig. 6; but in all instances the.

ermits of the passage of the ma-' curved face teriai in sucii manner that increased force or pressure maybe obtained and the material approximately straight line from the entrance to the discharge end of the casing, The

double-flight screw, while acting more slowly than the single-flight screw heretofore-employed, is capable of exerting greater pressure on the material with the same amount of power employed in an ordinary press.

I claini 1. In an oil-press, a pressure-screw, and a casing, the strainer elements of which are extended inward to form ribs.

2. In an oil-press, a screw, and a'strainingcasing having inwardly-extended portions forming ribs to ,prevent rotative movement of the material.

3. In an oilpress,- a pressure-screw, and a casing formed of slats, of which one or more are extended inward to form ribs.

4. In an oil-press, a pressure-screw, and a casing formed offslats arranged on slightly helical lines. i

5. In an oil-press, a pressure-screw, and slats arranged on slightly helical lines to force materia1-retarding ribs. p

6. In an oil-press, a casing, and a'screw having a recessed flight, the recess terminating short of the root of the flight.

7 In an oil-press, a casing, and a pressure- .;one edge of each slat inward, and thus form screw, the flight bemg recessed and one wall Intestimony that f claim the foregoing as of the recess being arranged to form a cam my-own I have hereto aifixed my signature to far thrusting the. material outward toward' .in the presence oftwo Witnesses. v l t e casin 8. In all oil-press, a casing, and apressure- FREDERICK E screw, the forward or thrust side of the flight Witnesses: being curved to form a cam acting to thrust J (Ross COLHOUN, the material in the direction of the casing; v JNo. E. PARKER. 

